The curious soda-making phenomenon (wasn’t this in the ’70s, too?) leaps from basic-cable commercials to the more aspirational environs of the Hotel ZaZa pool patio. ZaZa is presenting soda siphon service poolside, offering a carbonated Cointreau Rickey for $50. That includes the fizzing contraption, the booze, fruits and a muddler for conducting your own science experiments.

Friday: Central 214 bartender Amber West celebrates National Margarita Day with her creation the Avarita, a margarita made with tarragon- and Thai chile-infused El Jimador, Mathilde XO, agave nectar, fresh lime and muddled avocado and served over ice. It’s $9 all day.

Sunday: Hotel ZaZa reprises the delightful decadence of its Sunday School brunch, starting at noon. Pricey at $50, but boy, oh boy. Reserve at 214-550-9500 or email charp@hotelzaza.com.

Among the Oscar watch parties is one at the People’s Last Stand. The cocktail lounge is giving its drinks a film spin, such as the Zero Dark and Stormy, Les Moscow Mule and Life of Pisco. The party runs from 6 to 10 p.m.